MAX2463EAI Просмотр технического описания (PDF) - Maxim Integrated
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MAX2463EAI Datasheet PDF : 14 Pages
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900MHz Image-Reject Transceivers
Typical Operating Characteristics (continued)
(MAX242X/246X EV kit, VCC = +3.3V; fLO = 925.7MHz (MAX2420), fLO = 961MHz (MAX2421), fLO = 985MHz (MAX2422), fLO = 904.3MHz
(MAX2460); fLO = 805MHz (MAX2463); fRXIN = 915MHz; PRXIN = -35dBm; PTXIN = -15dBm (330Ω); LNAGAIN = 2V; TXGAIN = VCC;
VCOON = 2.4V; RXON = TXON = MOD = DIV1 = PREGND = GND; TA = +25°C; unless otherwise noted.)
MAX2420
RXOUT 1dB COMPRESSION POINT
vs. TEMPERATURE
-3
RXON = VCC
-4
VCC = 4.8V
-5
RECEIVER IMAGE REJECTION
vs. RF FREQUENCY
60
RXON = VCC
50
40
30
RECEIVER IMAGE REJECTION
vs. IF FREQUENCY
60
MAX2420 MAX2460 RXON = VCC
50
MAX2422
40
MAX2421
MAX2463
-6
VCC = 2.7V
20
30
VCC = 3.3V
-7
10
20
0
-8
10
-10
-9
-40 -20 0 20 40 60 80
TEMPERATURE (°C)
RXIN INPUT IMPEDANCE
vs. FREQUENCY
MAX2420 toc14
50
-100
45
RXON = VCC
40
-80
35
IMAGINARY
30
-60
25
REAL
20
-40
15
10
-20
5
0
-0
600 800 1000 1200 1400
FREQUENCY (MHz)
TXOUT OUTPUT IMPEDANCE
vs. FREQUENCY
150
100
50
REAL
0
-50
IMAGINARY
-100
-150
-200
-250
TXON = VCC
-300
600 800 1000 1200 1400 1600 1800 2000
FREQUENCY (MHz)
-20
0
20
400 800 1200 1600 2000
RF FREQUENCY (MHz)
TRANSMITTER GAIN
vs. TXGAIN VOLTAGE
10
VCC = 3.3V
0
VCC = 2.7V
VCC = 4.8V
-10
-20
-30
TXON = VCC
-40
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
TXGAIN VOLTAGE (V)
MAX2420
TRANSMITTER OUTPUT SPECTRUM
10
0 TXON = VCC
-10
FUNDAMENTAL
-20
-30
LO
-40
IMAGE
-50
-60
-70
-80
-90
875 885 895 905 915 925 935 945 955 965 975
FREQUENCY (MHz)
0
1
10
100
1000
IF FREQUENCY (MHz)
MAX2420
TRANSMITTER GAIN vs. TEMPERATURE
18
16
VCC = 4.8V
14
12
VCC = 2.7V
VCC = 3.3V
10
8
6
4
TXON = VCC
2
-40 -20 0
20 40 60
TEMPERATURE (°C)
80 100
MAX2460
TRANSMITTER OUTPUT SPECTRUM
0
-10
TXON = VCC
-20
FUNDAMENTAL
-30
IMAGE LO
-40
-50
-60
-70
-80
-90
-100
855 865 875 885 895 905 915 925 935 945 955
FREQUENCY (MHz)
6 _______________________________________________________________________________________
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